Guardrail Bolts (Kits) M16×55 8.8 Carbon Steel Dacromet

Specifications

Standard: GB/T 15831
SKU: GB-000013
Nominal Diameter: M16
Length: 55 mm
Material: Carbon Steel
Grade: 8.8
Finish: Dacromet
Unit Weight: 167 g/pc
Type: Standard Part

Quantity (pcs)

Need another spec? Request a quote with your parameters →

Standard Basis

GB/T 15831

This family is confirmed by spec and drawing, without forcing one standard family.

Spec Range

M16 × 55mm · 同族 18 个规格

This SKU is sourced per order; other lengths/materials in this family below.

Material & Grade

Carbon Steel · 8.8

Quenched & tempered, Rm≥800 MPa (Rp0.2=640), standard high-strength

Surface & Finish

Dacromet

Hydrogen-embrittlement safe for high-strength bolts; stable assembly friction

Where It Fits

High-Strength Safe

Dacromet suits 10.9+ bolts; stable assembly friction

Heavy-Duty / Structural

8.8 quenched & tempered, equipment erection, structural joints, vibration duty

Custom to Drawing

Lengths/materials/grades not listed can be manufactured to drawing or standard

FAQ

MOQ and lead time?

Sourced per order or made to drawing. MOQ and lead time are confirmed at quote time by quantity, material and finish. Other sizes in this family are listed above; unlisted specs can be sourced to your drawing.

Can material or grade be substituted?

Current grade: Quenched & tempered, Rm≥800 MPa (Rp0.2=640), standard high-strength. Swapping grade/material changes strength and corrosion resistance (e.g. 8.8→10.9 raises strength, 304→316 raises chloride resistance), re-check design load and environment before substitution.

How do I choose the finish?

Hydrogen-embrittlement safe for high-strength bolts; stable assembly friction. Other finishes (HDG, Dacromet, electro zinc) can be quoted on the same size.